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5 data separator, 6 message unit separator, 7 root specifier – KEPCO KLP Series Developer's Guide, Rev 1 User Manual

Page 85: 8 message terminator

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KLP-DEV 031113

6-5

6.5.5

DATA SEPARATOR

Data must be separated from the last keyword by a space (e.g., VOLT:LEV:TRIG 14 or
SOUR:VOLT? MAX

6.5.6

MESSAGE UNIT SEPARATOR

When two or more message units are combined in a program message, they must be separated
by a semicolon (;) (e.g., VOLT 15;MEAS:VOLT? and CURR 12; CURR:TRIG 12.5).

6.5.7

ROOT SPECIFIER

The root specifier is a colon (:) that precedes the first keyword of a program message. This
places the parser at the root (top left, Figure 6-2) of the command tree. Note the difference
between using the colon as a keyword separator and a root specifier in the following examples:

VOLT:LEV:IMM 16 Both colons are keyword separators.

:CURR:LEV:IMM 4 The first colon is the root specifier, the other two are keyword separators.

VOLT:LEV 6;:CURR:LEV 15 The second colon is the root specifier, the first and third are key-
word separators

:INIT ON;:TRIG;:MEAS:CURR?;VOLT? The first three colons are root specifiers.

6.5.8

MESSAGE TERMINATOR

The message terminator defines the end of a message. One message terminator is permitted:

• new line (), ASCII 10 (decimal) or 0A (hex)

NOTE: Kepco power supplies require a message terminator at the end of each program mes-

sage. The examples shown in this manual assume a message terminator will be added
at the end of each message. Where a message terminator is shown it is represented
as regardless of the actual terminator character.